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|Title:||Synthesis, characterisation and adduct formation of (3,4-dimethylphenoxo) tantalum(V) chlorides|
|Authors:||Chhipa, R C|
Mehrotra, R C
|Abstract:||New 3,4-dimethylphenoxotantalum(V) chlorides of the type Ta(OC6H3Me2,3,4)x Cl5-X(1a-c), (where x= 1,2,3) have been synthesised by the interaction of tantalum(V) chloride and 3,4-dimethylphenol in benzene (or dichloromethane), under refluxing conditions. Treatment of 1a-c with donor ligands such as pyridine (Py)or tetrahydrofuran(THF) yields molecular adducts of the types, Ta(OC6H3Me2-3,4)x Cl5-X(Py) (2a-c) and Ta(OC6H3Me3-3,4)X Cl5-X(THF)(3a-c) (x = 1,2,3). Interaction of sodium 3,4-dimethylphenolate with TaCl5 in THF and benzene in different stoichiometric ratios yields adducts of the type Ta(OC6H3-Me3-3,4)X Cl5-X(THF) (3c-e) (x=3,4,5). These derivatives have been characterised by elemental analyses, IR and PMR spectral data as well as molecular weight determinations.|
|Appears in Collections:||IJC-A Vol.29A(08) [August 1990]|
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